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Increasing N deposition impacts neither diversity nor functions of deadwood‐inhabiting fungal communities, but adaptation and functional redundancy ensure ecosystem function

Affiliation
Department of Soil Ecology, UFZ-Helmholtz Centre for Environmental Research, Theodor-Lieser-Str. 4, Halle (Saale), D-06120, Germany
Purahong , Witoon;
Affiliation
Department of Soil Ecology, UFZ-Helmholtz Centre for Environmental Research, Theodor-Lieser-Str. 4, Halle (Saale), D-06120, Germany ; German Centre for Integrative Biodiversity Research (iDiv), Halle-Jena-Leipzig, Deutscher Platz 5e, Leipzig, D-04103, Germany
Wubet, Tesfaye;
Affiliation
University of Freiburg, Faculty of Environment and Natural Resources, Chair of Silviculture, Tennenbacherstr. 4, Freiburg im Breisgau, D-79085, Germany ; Biosphere Reserve Vessertal-Thuringian Forest, Brunnenstr. 1, Schmiedefeld am Rennsteig, D-98711, Germany
Kahl, Tiemo;
Affiliation
Technische Universitat Dresden – International Institute € (IHI) Zittau, Department of Bio- and Environmental Sciences, Markt 23, Zittau, D-02763, Germany
Arnstadt, Tobias;
GND
1139391372
Affiliation
Julius Kühn-Institute (JKI), Federal Research Centre for Cultivated Plants, Institute for National and International Plant Health, Brunswick, Germany ; 1Department of Soil Ecology, UFZ-Helmholtz Centre for Environmental Research, Theodor-Lieser-Str. 4, Halle (Saale), D-06120, Germany
Hoppe, Björn;
Affiliation
Department of Soil Ecology, UFZ-Helmholtz Centre for Environmental Research, Theodor-Lieser-Str. 4, Halle (Saale), D-06120, Germany ; Department of Ecology, University of Kaiserslautern, ErwinSchrodinger-Straße, Kaiserslautern, 67663, Germany
Lentendu, Guillaume;
Affiliation
Department of Systematic Botany and Functional Biodiversity, University of Leipzig, Institute of Biology Johannisallee 21-23, Leipzig, D-04103, Germany
Baber, Kristin;
Affiliation
University of Freiburg, Faculty of Environment and Natural Resources, Chair of Silviculture, Tennenbacherstr. 4, Freiburg im Breisgau, D-79085, Germany
Rose, Tyler;
Affiliation
Technische Universitat Dresden – International Institute € (IHI) Zittau, Department of Bio- and Environmental Sciences, Markt 23, Zittau, D-02763, Germany
Kellner, Harald;
Affiliation
Technische Universitat Dresden – International Institute € (IHI) Zittau, Department of Bio- and Environmental Sciences, Markt 23, Zittau, D-02763, Germany
Hofrichter, Martin;
Affiliation
University of Freiburg, Faculty of Environment and Natural Resources, Chair of Silviculture, Tennenbacherstr. 4, Freiburg im Breisgau, D-79085, Germany
Bauhus, Jürgen;
Affiliation
Department of Soil Ecology, UFZ-Helmholtz Centre for Environmental Research, Theodor-Lieser-Str. 4, Halle (Saale), D-06120, Germany
Krüger, Dirk;
Affiliation
Department of Soil Ecology, UFZ-Helmholtz Centre for Environmental Research, Theodor-Lieser-Str. 4, Halle (Saale), D-06120, Germany ; German Centre for Integrative Biodiversity Research (iDiv), Halle-Jena-Leipzig, Deutscher Platz 5e, Leipzig, D-04103, Germany
Buscot, François

Nitrogen deposition can strongly affect biodiversity, but its specific effects on terrestrial microbial communities and their roles for ecosystem functions and processes are still unclear. Here, we investigated the impacts of N deposition on wood‐inhabiting fungi (WIF) and their related ecological functions and processes in a highly N‐limited deadwood habitat. Based on high‐throughput sequencing, enzymatic activity assay and measurements of wood decomposition rates, we show that N addition has no significant effect on the overall WIF community composition or on related ecosystem functions and processes in this habitat. Nevertheless, we detected several switches in presence/absence (gain/loss) of wood‐inhabiting fungal OTUs due to the effect of N addition. The responses of WIF differed from previous studies carried out with fungi living in soil and leaf‐litter, which represent less N‐limited fungal habitats. Our results suggest that adaptation at different levels of organization and functional redundancy may explain this buffered response and the resistant microbial‐mediated ecosystem function and processes against N deposition in highly N‐limited habitats.

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License Holder: 2018 The Authors.

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